You do have a working line , how else is your broadband working , not having a phone service isn’t the same thing , TBH , if you had a telephone service with BT and decided not to have a phone service with Sky , depending on how Sky interpreted that , could mean they didn’t ‘takeover’ the BT service but ordered a ‘new’ service.
If you never received a ‘sorry to see you leave’ notification from BT , suggests Sky didn’t ’take over ‘ the line , ….from a consumer point of view , you can’t know if Sky ordered an new line and Openreach simply used the existing lineplant ( so basically disconnected BT and connected Sky in its place ) , or a ‘proper’ migration was arranged, but the fact you didn’t get a notification from BT suggests it wasn’t a migration, otherwise you get the ‘sorry you are leaving’ letter .
TBH , we can only speculate, but it’s pretty clear you didn’t follow the correct process , which is you contact the new provider ( Sky in this case ) letting them know that you have already have a working service to move to Sky , you should not contact BT yourself ( but you did ) , we can’t know for sure what Sky did , but the BT ‘sorry you are leaving’ was never received, which is an automatic part of the migration, but it’s not sent if a ‘new’ line is ordered by the new ISP .
Moving forward, if you did contact BT yourself, even though that was an error it serves as a date you gave notice ( even if it were not acted on ) , so with 30 days notice , that should be your last date of BT billing ( which probably will mean that you will have paid for two services for a while but only used the Sky one
I cannot recall any letter re leaving. I did call BT to let them know I was moving to sky when I completed the switch from sky, approx 14 days before it went live on 17th oct
This note is somewhat contradictory, how could you advise BT after the ‘switch’ was completed and be 14 days before it went live , was this before or after the 17th October ?, if you mean as soon as you made the arrangement with Sky , so around the 3rd October you then called BT ( which is the wrong thing to do ) then that will almost certainly mess up the migration, but you would be liable to pay BT until the 3rd November, billing isn’t aligned with these dates so you could end up paying for December and getting a refund for any days paid for after the cessation of BT service.
Did you have a complicated time with Sky , for example Sky advising you that the original order was cancelled ( not by them ) and they had to raise a new service order , or did you only ever contact Sky once and as far as you were aware there were no complications, they gave you a date ( 17th October ) when you called ( the only time you needed to call them ) on the 3rd October and everything seemed to go to plan with the exception of you calling BT when you shouldn’t have
